Arwen could be a main character as well. Her beauty and grace, along with her connection to Aragorn, could make her an interesting foil to Vlad. She might be able to see the good in him, if there is any, or she could be a target for Vlad's more sinister intentions. Also, Sauron himself could be a main character in the sense that his plans would be affected by Vlad's presence in Middle - earth.
Gandalf would also be a crucial character. His wisdom and magic could either be a threat or an asset to Vlad. If Vlad is seen as a potential danger, Gandalf would try to keep him in check. But if Vlad decides to side with the good, Gandalf could use his knowledge to help Vlad better understand Middle - earth and its ways. Another main character could be Legolas. His archery skills and elven grace would add an interesting dynamic to the group, especially when dealing with Vlad's otherworldly powers.
Another interesting concept is that Vlad is a lost hero from a far - off land who arrives in Middle - earth. He could use his skills in combat and his knowledge of dark magic to help the Fellowship. For example, he might be able to use his vampiric speed to quickly scout areas or use his charm abilities to deceive the enemy. He could also have a complex relationship with Aragorn, either as a rival or an unexpected ally.
Alice from Wonderland. Her strange adventures in Wonderland could give her a unique perspective in Middle - earth. She might not be afraid of the strange creatures in Middle - earth as she has already faced the oddities in Wonderland. Maybe she could even make the trolls and orcs less menacing with her innocent charm.
Aragorn could be a great choice. He already has a heroic and noble presence. In a harem fanfiction, he could attract various female characters from different regions of Middle - earth. His skills as a warrior and leader would make him an appealing focus for a harem story.
There could be a young hobbit with a brave heart and a thirst for adventure. Maybe an elf with a mysterious past and great archery skills.
One way it could work is by having Naruto characters in Middle - earth. For example, Naruto with his shadow clone jutsu could be a great asset in the battles against Sauron's forces. He could create clones to confuse the orcs and trolls. Meanwhile, characters from 'Lord of the Rings' could learn from Naruto's ninja skills. Frodo might pick up some stealth techniques from Naruto's training.
One idea could be a vampire character who is drawn to the power of the One Ring. Maybe this vampire, being a creature of the night and often associated with darkness and power -hunger, sees the ring as a means to gain ultimate power in Middle - earth. For characters, you could have a half - vampire, half - elf who struggles with their dual nature while being caught in the events related to the ring.
In the 'Lord of the Rings Graphic Novel', Frodo Baggins is a central figure. He's a small hobbit from the Shire but has a great burden with the One Ring. Gandalf the Grey (and later Gandalf the White) is there to guide and protect. Aragorn, also known as Strider, is a key character. He's a ranger with a noble lineage and plays a crucial role in the fight against Sauron. Samwise Gamgee, Frodo's loyal friend, is also among the main characters, always by Frodo's side through the perils of the journey.
In the 'Lord of the Rings' full story, there are quite a few main characters. Frodo is the central figure as he is the Ring - bearer. Sam is by his side throughout, providing support and loyalty. Gandalf is a powerful wizard who guides and protects them. Aragorn is a key character, being a descendant of kings and a great warrior. Legolas and Gimli represent their respective races, the elves and the dwarves. Merry and Pippin, the other hobbits, also have important roles at different points in the story. They all contribute to the fight against Sauron and the journey to destroy the One Ring.
Frodo Baggins is one of the main characters. He is the ring - bearer. Gandalf is also very important, a wise wizard. Aragorn, the heir to the throne, plays a crucial role in the story.